So you are not trying to recover any databases/websites?
It sounds like you forgot to run the install "As an Administrator"
There are some stpes in the install that require Admin privilages, one being the building of the MySQL and mariaDB systems.
I suggest you uninstall the current install andthen manually make sure you have removed the C:\wamp64 folder
The reinstall but remembering to do it As an Administrator
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(Windows 10 Pro 64bit) (Wampserver 3.3.4 64bit) Aestan Tray Menu 3.2.5.4
<Apache versions MULTIPE> <PHP versions MULTIPLE> <MySQL Versions MULTIPLE>
<MariaDB versions MULTIPLE> <phpMyAdmin versions MULTIPLE> <MySQL Workbench 8.0.23>Read The Manuals Apache --
MySQL --
PHP --
phpMyAdminGet your Apache/MySQL/mariaDB/PHP ADDONs here from the
WAMPServer alternate Repo-X-X-X-
Backup your databases regularly Here is How dont regret it later! Yes even when developing -X-X-X-